Bearing supporting type drill bit with dustproof function

Abstract

The utility model relates to the technical field of drill bits, in particular to a bearing supporting type drill bit with a dustproof function, which comprises a bearing, limiting lugs are fixedly arranged in the middles of two sides of the outer surface of the bearing, a fixing block is fixedly mounted on the inner surface of the bearing, and a drill bit is fixedly mounted in the middle of the lower surface of the fixing block. A funnel-shaped dustproof cover is fixedly installed below the bearing, connecting lugs are fixedly arranged on the lower portions of the two sides of the outer surface of the dustproof cover, guide rods are fixedly arranged in the middles of the upper surfaces of the connecting lugs, the other ends of the guide rods penetrate through the limiting lugs to extend out, and compression springs are fixedly installed in the middles of the outer surfaces of the guide rods in a sleeving mode. The two ends of the compression spring are fixedly connected with the lower surface of the limiting lug and the upper surface of the connecting lug correspondingly. According to the drill bit, waste rock residues generated in the drilling process can be prevented from leaking outwards, the phenomenon that the waste rock residues are drawn into the bearing structure along with approaching of the bearing structure is avoided, and the bearing structure can be prevented from being damaged so that normal use of the drill bit can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, and more specifically, to a bearing-supported drill bit with dustproof function. Background Technology

[0002] A bearing-supported drill bit is a drill bit with a bearing installed on the shank. This design allows the drill bit to contact the hole wall during drilling, converting the inertia of the drilling process into minute rotations, thereby reducing friction and improving drilling efficiency and accuracy.

[0003] However, existing bearing-supported drill bits generate a large amount of cuttings and debris during drilling as the drill bit advances through the soil and rock. As the drill bit continues to advance, the bearing structure gets close to these cuttings and debris, leading to their entrapment and damage, thus affecting the normal operation of the drill bit. Therefore, we propose a bearing-supported drill bit with dustproof functionality. Summary of the Invention

[0004] The main objective of this invention is to provide a bearing-supported drill bit with dustproof function to overcome the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a bearing-supported drill bit with dustproof function, including a bearing, with limiting ears fixedly provided on the middle of both sides of the outer surface of the bearing, a fixing block fixedly installed on the inner surface of the bearing, a drill bit fixedly installed on the middle of the lower surface of the fixing block, and a funnel-shaped dust cover fixedly installed below the bearing, with connecting ears fixedly provided on the lower part of both sides of the outer surface of the dust cover.

[0006] A guide rod is fixedly provided in the middle of the upper surface of the connecting ear. The other end of the guide rod extends outward through the limiting ear. A compression spring is fixedly installed in the middle of the outer surface of the guide rod. The two ends of the compression spring are fixedly connected to the lower surface of the limiting ear and the upper surface of the connecting ear, respectively.

[0007] The dust cover has a storage groove inside, and a sealing plate is movably installed on the inner surface of the storage groove. An adjustment ring is fixedly installed in the middle of the outer surface of the sealing plate. An adjustment groove is opened in the middle of the outer surface of the dust cover, and the adjustment ring is embedded in the adjustment groove.

[0008] As a further improvement of this utility model, dustproof gaskets are fixedly installed at the openings on both the upper and lower surfaces of the bearing.

[0009] As a further improvement of this utility model, an adapter is fixedly provided in the middle of the upper surface of the fixing block, and a chip removal groove is provided on the outer surface of the other end of the drill bit.

[0010] As a further improvement of this utility model, an opening is provided in the middle of the upper surface of the dust cover, and a sealing ring is fixedly installed on the inner surface of the dust cover through the opening. The output end of the drill bit extends outward through the sealing ring. Observation ports are provided in the middle of the front and rear ends of the outer surface of the dust cover, and an anti-slip pad is fixedly provided on the lower surface of the dust cover.

[0011] As a further improvement of this utility model, the structural dimensions of the sealing plate are matched with the opening dimensions of the observation port.

[0012] The beneficial effects of this utility model are:

[0013] This invention can gather and isolate the waste cuttings and rock debris generated at the drilling site during the drilling process, thereby preventing the waste cuttings and rock debris from leaking out and ensuring the safety of the drilling process. At the same time, it avoids the phenomenon of waste cuttings and rock debris being drawn into the bearing structure as it approaches, which helps to avoid damage to the bearing structure and ensure the normal use of the drill bit. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0015] Figure 1 This is a front three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a bottom view of the present invention;

[0017] Figure 3 This is a disassembled schematic diagram of the dust cover structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the disassembly and operation of the sealing plate structure of this utility model.

[0019] In the diagram: 1. Bearing; 101. Dustproof washer; 102. Limiting ear; 2. Fixing block; 201. Adapter; 202. Drill bit; 3. Dust cover; 301. Connecting ear; 302. Guide rod; 303. Compression spring; 304. Sealing ring; 305. Observation port; 306. Anti-slip pad; 4. Sealing plate; 401. Adjusting ring. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0024] Please see Figures 1-4 As shown, a bearing-supported drill bit with dustproof function includes a bearing 1. Dustproof gaskets 101 are fixedly installed at the openings on the upper and lower surfaces of the bearing 1. Limiting ears 102 are fixedly provided in the middle of both sides of the outer surface of the bearing 1. A fixing block 2 is fixedly installed on the inner surface of the bearing 1. An adapter 201 is fixedly provided in the middle of the upper surface of the fixing block 2. A drill bit 202 is fixedly installed in the middle of the lower surface of the fixing block 2. A chip removal groove is opened on the outer surface of the other end of the drill bit 202. A funnel-shaped dust cover 3 is fixedly installed below the bearing 1. Connecting ears 301 are fixedly provided in the lower part of both sides of the outer surface of the dust cover 3.

[0025] A guide rod 302 is fixedly provided in the middle of the upper surface of the connecting ear 301. The other end of the guide rod 302 extends outward through the limiting ear 102. A compression spring 303 is fixedly installed in the middle of the outer surface of the guide rod 302. The two ends of the compression spring 303 are fixedly connected to the lower surface of the limiting ear 102 and the upper surface of the connecting ear 301, respectively.

[0026] An opening is provided in the middle of the upper surface of the dust cover 3. A sealing ring 304 is fixedly installed on the inner surface of the opening of the dust cover 3. The output end of the drill bit 202 extends outward through the sealing ring 304. Observation ports 305 are provided in the middle of the front and rear ends of the outer surface of the dust cover 3. An anti-slip pad 306 is fixedly provided on the lower surface of the dust cover 3.

[0027] The dust cover 3 has a storage groove inside. A sealing plate 4 is movably installed on the inner surface of the dust cover 3 through the storage groove. An adjusting ring 401 is fixedly installed in the middle of the outer surface of the sealing plate 4. An adjusting groove is opened in the middle of the outer surface of the dust cover 3. The adjusting ring 401 is embedded in the adjusting groove. The structural dimensions of the sealing plate 4 match the opening size of the observation port 305.

[0028] When using this utility model, the tool for controlling the rotation of the drill bit 202 and drilling can be fixedly connected to the adapter 201. At this time, the dust cover 3 can cover the drilling point of the corresponding rock and soil material, and the position of the drill bit 202 corresponding to the drilling point can be checked through the observation port 305. When the drilling position is accurate, the adjusting ring 401 can be turned clockwise or counterclockwise to control the sealing plate 4 to extend from inside the dust cover 3. The extended sealing plate 4 can then be used to close the observation port 305, achieving a sealed state of the dust cover 3. At this time, the drill bit 202 can be controlled to advance along the guide rod 302 toward the drilling point and complete the drilling operation when in contact with the rock and soil material.

[0029] When the drill bit 202 is in contact with the rock and soil material for drilling, the waste cuttings and rock debris discharged through the borehole will be gathered in the dust cover 3. In this case, as the bearing 1 moves closer to the borehole with the continuous advancement of the drill bit 202, the problem of waste cuttings and rock debris being rolled into it can be avoided. After the drilling is completed, the compression spring 303, which is squeezed by the advancement of the drill bit 202 along the guide rod 302, can be unfolded and reset, thereby controlling the dust cover 3 and the bearing 1 to move away from each other and reset, keeping the dust cover 3 and the output end of the drill bit 202 flush, so that the bearing 1 can be protected in subsequent drilling operations.

[0030] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A bearing-supported drill bit with dustproof function, characterized in that, Includes a bearing (1), with limiting ears (102) fixedly provided on the middle of both sides of the outer surface of the bearing (1), a fixing block (2) fixedly installed on the inner surface of the bearing (1), a drill bit (202) fixedly installed on the middle of the lower surface of the fixing block (2), a funnel-shaped dust cover (3) fixedly installed below the bearing (1), and connecting ears (301) fixedly provided on the lower part of both sides of the outer surface of the dust cover (3); A guide rod (302) is fixedly provided in the middle of the upper surface of the connecting ear (301). The other end of the guide rod (302) extends outward through the limiting ear (102). A compression spring (303) is sleeved and fixedly installed in the middle of the outer surface of the guide rod (302). The two ends of the compression spring (303) are fixedly connected to the lower surface of the limiting ear (102) and the upper surface of the connecting ear (301), respectively. The dust cover (3) has a storage groove inside. A sealing plate (4) is installed on the inner surface of the dust cover (3) through the storage groove. An adjusting ring (401) is fixedly installed in the middle of the outer surface of the sealing plate (4). An adjusting groove is opened in the middle of the outer surface of the dust cover (3). The adjusting ring (401) is embedded in the adjusting groove.

2. A bearing-supported drill bit with dustproof function according to claim 1, characterized in that, Dustproof gaskets (101) are fixedly installed at the openings on the upper and lower surfaces of the bearing (1).

3. A bearing-supported drill bit with dustproof function according to claim 1, characterized in that, An adapter (201) is fixedly provided in the middle of the upper surface of the fixing block (2), and a chip removal groove is provided on the outer surface of the other end of the drill bit (202).

4. A bearing-supported drill bit with dustproof function according to claim 1, characterized in that, The dust cover (3) has an opening in the middle of its upper surface. A sealing ring (304) is fixedly installed on the inner surface of the opening. The output end of the drill bit (202) extends outward through the sealing ring (304). Observation ports (305) are opened in the middle of the front and rear ends of the outer surface of the dust cover (3). Anti-slip pads (306) are fixedly installed on the lower surface of the dust cover (3).

5. A bearing-supported drill bit with dustproof function according to claim 1, characterized in that, The structural dimensions of the sealing plate (4) are matched with the opening dimensions of the observation port (305).

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